Ear-pump.



UNITED 'STATE- Sv PATENT OFFICE.

JULIUS B. WANTZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO VICTOR ELECTRICCOMPANY, A CORPORATION OF ILLINOIS.

EAR-Fume SPECIFICATION forming part of Letters Patent No.-'v728,526,dated May 19, 1903.

'Appiioaaon siearebmry 11,19os. semina. 142,976. .(110 model.)

To @ZZ/whom it 'may concern/:-

Be it known that I, J uL1Us B.WANT z,a citizen of the United States,residing at Chicago,

in the county of Cook and State of Illinois,

have invented a new and useful Improve,- ment in Ear-Pumps, of which thefollowing is a specification.

My object is to provide a-particularly simple and desirable pneumaticYpump of improved construction and capable ofready adf justment toeffect Asuctionalone or suction with release` or vibrations broughtabout by alternate suction and compression Vor cornpression alone.`

The pumpis moreespeciallyadapted for: use with anyf suitabley tip forinsertion into the ear of apatient,-when the device may be employed forexercising or massaging pneumatically the tympanum in the treatment ofcertain diseases of the ear.

In carrying out my invention I provide a small piston-pump fitted at;its base with a rotary slide-valve, which may be turned to and held inanyone of four positions to bring about the results above stated. In usethe valve is connected to a hose (not shown) carrying a tip, earpiece,or cup for any massaging purpose.

Referring to'thefdrawings, Figure l is View of my improved pump, partlyin side elevation andpartlyin section, showing the,

valve portion turned tothe position wherein it produces compressionalone Fig. 2,a broken section takenonline2 in Fig. l and showing thejAmeans for adjusting the stroke of -the pump-piston Fig.V 3,' anenlarged brokense'ction of the pump, showing the valve turned@ to thesuction position; Figs. 4, 5, and 6,

broken sections taken on lines 4, 5, and '6 in Figs. 1l, 7, 8, and 10,respectively; Figs. 7 and 8, plan views of the meeting faces of thevalve and Valve-seat, the views being taken on dotted lines 7 and 8 inFig. 3 and viewed as indicated by the arrows; Fig. 9,'.a broken plansection taken on line 9 in Fig. 3, the

valve being in the compression position; Figs. 10, 11, and 12, plansectional views on line 9 in Fig. 3, but showing, respectively, thevalve turned to vibration, suction and release, and suction positions;and Fig. 13, a

perspective view of one of several similar Patentedivray 1e, 1903.-?

screw-plugs inthe valve-seatportion of thel pump which confine and limitthe nieve- .fining therock-shaft against4 longitudinal v play. The rearer'dof `the opening?) is closed in the present constructionbyan'ornamental plug e. Working in the cylinder D is a piston E on thelower vend of astem E. ing through the disk orhead C at right angles tothe shaft B is an openin'gj', from which, at

one side of its axis of rotation, extends a slotV f of less width thanthe openingf. The head of the piston-stem forms a bearing-ring E2. Athumb-screw g, having a cylindrical shank g and a threaded shankextension g2, passes at the shank g through andformfs a bearing forthering-portion E2. Between the ring and the faceofthe face of the diskC is a washer g,5. The threadedpart g2 of the shank ypasses throughtheslot f `and carriesa nutyglin the openingf. By loosening thethumb-screwl g it and the parts-carried thereby may, be; slid toward andaway .from the .center of-rotation of the disk C to diminish'or increasethe throw of the pumpvpiston and V'tighten it in the adjusted position.The vlower endor head D" of the cylinder presents a fiat valve-seat ormeeting face h for the meeting or seating face c' of a rotaryslide-valve F. The valve Fis upon a bolt G,

having a plain shank portionlc, headlc', andthreaded end k2. The boltpasses at its shank Zt through a central opening in the valve, and thepart k2 is screwed into a ythreaded socket in the head D'. Surroundingthe shank lc and confined between the head k' and the under side of thevalve F is a spring G', which operates to press the valve yieldingly toits seat Without interfering with its rotation.y l

Extending through the valve inthe posif tion shown is a port or passageZ, and diametrically opposite thereto is a port or passage m, extendingfrom the face of the valve out through one side thereof and terminatingin a hollow handle or projection m', adapted to fit into the end of arubber hose. (Not shown.) Extending from the face hthrough thecylinder-head to the interior of the cylinderare passages 71,19, fr, s,and t. In the passage 'n is a chamber n', containing a ball-valve n2,seating downward. In the upper end of the said passage is a hollowscrew-plug w, which limits the rise of the ball-valve, but containsslots w to prevent closing of the passage when the ball is raisedagainst its lower end. In the passage p is a chamber 1f, containing aball-valve p2, which seats upward, its movement away from the seat beinglimited by a screw-plug u, like the one described. In the passage fr isa chamber r', containing an upwardly-seating ball-valve r2, the distanceof movement of said valve from its seat being limited by a screw-plug w,similar to the one described. The passages s t contain no chambers orvalves.

The valve F' may be turned upon the pin or bolt G a half-revolution,this movement being limited by stops y, fastened to the head D andextending downward into the path of the projection or handle m. Whenturned to one stop, as shown in 3, the ports lp are brought intoregisteri'and also the ports m fn.. This is what is termed the suctionposition. Rise of the piston E sucks air through the port ym anddischarges it through the port l. Thus in operation when, for example,the earpiece is inserted into the ear of the patient it tends towardproducing a vacuum at the outer side ot' the ear-drum.

When the valve is turned to the reverse position, whereby the portmlregisters with the port p and the port l registers with the port n, thepiston draws air through the port Zand forces it through the port m toexert compression against the ear-drum. When the valve is turned to theposition shown in Figs. 10 and 6, the port Z is blanked and the port fmregisters with the port t. In this position the piston in its downstrokeforces air against the ear-drum and its upstroke withdraws the airtherefrom, producing alternate compression and suction or Vibrations, asit is termed.

When the valve is turned tothe position shown in Figs. l1 and 4, theport Zregisters with the port 7' and the port m registers with the ports. \/Vhen in this position the rise of the plunger sucks air through theport m and in its descent may force the air simultaneously through theports m l. This has the effect of producing alternate suction andrelease upon the tympanum.

In the head D' is the spring plunger-pin and in the face of the valveare shallow sockets z c. The plunger-pin is in the path of the saidsockets and operates to engage one 'or the other when moved intoregister therewith. The engagement, though gentle, is sufficient to'indicate to the operator the position of the valve, but does notinterfere materially with the movement of the valve from one position toanother.

The rocking of the cylinder upon its bearing at d maintains it always inline with the piston-stem. The construction shown and described rendersit very easy to turn the valve to any position desired quickly andaccurately. The spring G' operates to hold the rotary slide-valveyieldingly against its seat, whereby under too great pressure throughthe passage m it will open, and thus prevent undue compression. Thetension of the spring may be varied, if desired, by turning the screw G.

While I prefer to construct my ilnprovements throughout as shown anddescribed, they may be variously modified in the matter of details ofconstruction without departing from the spirit of my invention'asdefined by the claims.

What I claim as new, and desire to secure by Letters Patent, is

l. In a pump of the character described, a cylinder having a valve-seatprovided with valved ports and open ports extending to the interior ofthe cylinder, and a main movable valve ou said seat provided withpassages adapted to register successively in the movement of the mainvalve with different said valve-seat ports, and operate under the actionof the pump according to the relative positions of the main valve toeect compression, suction, suction and release, or vibration,substantially as described.

2. In a pump of the character described, a cylinder having a valve-seatprovided with valved ports and open ports extending to the interior ofthe cylinder, and a rotary slidevalve on said seat provided withpassages adapted to register successively in the movement of theslide-valve with dierent said valve-seat ports, and operate under theaction of the pump according to the relative positions of theslide-valve to effect compression suction, suction and release, orvibration, substantially as described.

3. In a pump of the character described, a cylinder-head having avalve-seat provided with individually-valved ports n 1o r and open portss t, all communicating with the interior of the cylinder, and a rotaryslide-valve on said seat having the passages Z m adapted to register inthe movement of the slide-valve with said ports, substantially as andfor the purpose set forth.

4. In a pump of the character described, a cylinder-head having avalve-seat provided with valved ports and open ports communieating withthe interior of the cylinder, and a yielding, spring-pressed, rotaryslide-valve on said seat having passages adapted to register in themovement of the slide-valve with said ports, substantially as and forthe purpose set forth.

IOO

IIO

728,526 a l s 5. In a pump-of the character described, a low tubularextension m on the slide-valve cylinder-head having a valve-seatprovided registering with the passage m, al1 consstruct-v 1o withindividually-valved ports np 1" and open ned and arranged to operatesubstantially as ports s t, al1 communicating With the interior and forthe purpose set forth.

5 of the cylinder, and a yie1ding,springpressed, J ULIUS B. WANTZ.

rotary slide-valve on said seat having the pas- In presence ofsages Z madapted to register in the movement WALTER WINBERG,

of the slide-valve with said ports, and a hol WM. B. DAVIES.

